Integrating Sound Level Meter
LA-5111 Precision Wide-range Sound Level Meter
LA-5120 Precision High-sensitivity Sound Level Meter
LA-2111 Multi-function Sound Level Meter |
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The LA-2100/5100 series is the integrating type sound level
meters, conforming to Type 1
regulated in the standard such like JIS, IEC and ANSI.
The meters can make sure high accurate measurement and expand possibilities
of measurement in the field as well, because of featuring a wide dynamic
range, multiple parameter display and long-term recording on-board memory.
Designed to be compact, durable and easy to operate, with the large and
backlit LCD display, in addition, digital and quasi-analog bar graph indication
of measured value.
Multiple parameter display can offer easy monitoring for an operator at
the working site and measurement values of several parameters can be read
out simultaneously, during a specified measurement interval, including Leq,
LE, LMAX,
LMIN, LPK and Lx.
For measurement data recording, three types of on-board memory support a
variety of measurement applications. Mode of manual/Auto/Filter Scan can
be used creatively, according to users' application.
A broad dynamic range of 100 dB (90dB measurement range plus 10dB peak
margin) can be helpful to avoid changing or adjusting the measurement range
on the meters for prevention of over/under error conditions due to fluctuations
in the noise being measured.
All optional application software can be provided as the built-in software
option and it can maintain operationality in
good. |
Features
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Wide dynamic range of 100 dB
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Seven items of LA, Leq, LAE, LX,
LMAX, LMIN and Lpeak can be measured and indicated
at the same time.
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In the dual mode, sound pressure level can be measured with different time
and frequency weighting applied at the same time.
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Octave analysis (1/1 and 1/3 octave filters, 1/1 and 1/3 octave real-time
analysis) options are also available.
Specifications
Model |
LA-2111 |
LA-5111 |
LA-5120 |
| Applicable standard |
IEC 651/804 Type 2,
ANSI S 1.43 Type2
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IEC 651/804
Type 1,
ANSI S 1.43 Type 1 |
| Linearity
range |
normal |
75 dB |
| wide |
100 dB |
| Frequency range |
20Hz to 8kHz |
20Hz to 20kHz |
20Hz to 12.5kHz |
| Time weighting |
FAST, SLOW,
IMPULSE 10ms, PEAK |
| Frequency weighting |
A, C, FLAT |
| Measuring
range |
A |
25 to 130dB |
25 to 130dB |
19 to 120dB |
| C |
29 to 130dB |
29 to 130dB |
25 to 120dB |
| Flat |
34 to 130dB |
35 to 130dB |
33 to 120dB |
| Measurement Items |
Instantaneous SPL (LP), equivalent continuous SPL (Leq),
sound exposure level (LAE), percentile SPL (Lx), maximum
value (Max), minimum value (Min), peak hold (PEAKHOLD), TACTMAX (max. value
in 1s interval)
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| Measurement time |
1s, 3s, 5s,
10s, 20s, 30s, 1min, 3min, 4min 10s,
5min, 10min, 15min, 30min, 1h, 8h, 24h, manual (max. 100h) |
| Sampling interval |
20μs (Leq,
LAE, PEAKHOLD, MAX, MIN) |
| Lx sampling |
10ms, 0.1s,
0.5s, 1s, 5s |
| LP recording sampling |
5ms, 10ms,
20ms, 50ms, 0.1s, 0.2s, 0.5s, 1s, 2s, 5s |
| Dual mode |
available to provided
(option) |
provided
(standard) |
provided
(standard) |
| Display Section |
Type |
LCD with backlight
(128 x 64 dots) |
| Digital display |
Digital, 4-digit
with 0.1 dB resolution, updated every 1s |
| Bar display |
normal range |
60 dB range,
0.5 dB resolution, updated every 0.1s |
| wide range |
90 dB range,
1 dB resolution, updated every 0.1s |
| Battery display |
Battery voltage
(4 to 6V) is displayed in 8-segment bar graph
(indicator flashes for voltage of 3.8V or less) |
| Timer function |
Real-time clock
(calendar function provided) |
| Battery backup |
Backup of memory
data and real-time clock lasts for 5 months
(battery is charged during power on) |
| Memory Section |
Memory function |
| mode |
OFF, MANU, AUTO, FILTER SCAN
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| panel condition |
Power-off memory (initialization function provided)
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| Interface & Output
Section |
RS-232C interface |
Baud rate :
2400, 4800, 9600, 19200 bps |
| AC output |
normal range |
0.707Vrms (F.S.) |
| wide range |
2.24Vrms (F.S.) |
| DC output |
normal range |
2.5Vrms (F.S.),
0.5V/10dB |
| wide range |
2.5Vrms (F.S.),
0.25V/10dB |
| General |
Power supply |
Four type AA
batteries or AC adaptor |
| Battery life |
approx. 11hrs
with alkaline batteries |
approx. 13hrs with alkaline
batteries |
| Operating temperature
range |
-10 to +50°C |
| Operating humidity
range |
30 to 90%RH |
| Outer dimensions |
85(W) x 279(H)
x 50(D)mm |
85(W) x 347(H) x 50(D)mm |
| Weight |
approx. 500g |
approx. 550g |
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